III. Use the RUU to Unroot and Put Your Device Back to Stock

1. Download the official RUU from the thread linked below. MAKE SURE YOU CHOOSE THE CORRECT ONE FOR YOUR DEVICE!

Sensation 4G RUU (For T-Mobile US choose the TMOUS version with the highest number, indicating it is the latest version for T-Mobile USA).

2. Make sure USB debugging is still on from when you did the Setup ADB procedure by going to Settings > Applications > Development > Should have a check next to USB Debugging.

3. Plug your device in via USB to your computer.

4. Right click the RUU .exe file and select run as administrator (if you dont have that open just select Open).

5. Follow the RUU’s instructions to flash the stock firmware.

6. After the device reboots and is still plugged in via USB cable to the computer, open the command prompt by clicking on the Start menu and then typing in cmd and hitting enter in the search field.

7. In the command prompt, type the following with hitting enter at the end of each line:

cd c:\androidsdk\platform-tools (if you followed our adb procedure then that is the exact name, if not then you need to put in the folder where adb is located for you on your computer. i.e. c:\[nameofsdkfolder\platform-tools\)

adb reboot-bootloader

fastboot oem writesecureflag 3

fastboot reboot-bootloader

8. After you type the last line, you should see S-On at the top of the bootloader screen. If so, you are all set.

I'm David and I started this tech blog back in 2009 as a place to write down my thoughts on the crazy tech industry, talk about the latest gadgets coming out, as well as put down some tips and tricks to help others out with the tech they use every day.

Crazily, the site now has over 500k people on it sharing their love of tech every month! Nerd out with us, won't you?